Question

PLZZZ ANSWER............

Answer 1

a = k

b = - 1

c = - 2


We know that,

Discriminent = b^2 - 4ac

=> 25 = (-1)^2 - 4(k)(-2)

=> 25 = 1 + 8k

=> 8k = 25 - 1

=> 8k = 24

=> k = 3

Answer 2

Hello friend,

Here's your answer : (©)

As in kx² - x - 2
a = k, b = -1, c = -2
As D = b² - 4ac
=> D = (-1)² - 4(k)(-2)

=> D = 1 + 8k which equals to 25. {given}

Therefore 1 + 8k = 25
=> 8k = 24 
Therefore k = 3.


Hope my answer helps you.